Improvement in fermenting-vats



P. LITTMANN. Fermenting-Vat.

No. 216,335. Patented 1une1o.1s79.

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FRANZ LITTMANN, OF HALLEONTHESAALE, FRUSSIA, GERMANY.

IMPROVEMENT IN FERMENTlNG-VATS.

Specification forming part of Letters Patent No. 216,335, dated June 10, 1879; application iled February 25, 1879.

To all whom it may concern:

Be it known that I, FRANZ LITTMANN, of HalIeonthe-Saale, Prussia, German Empire, have invented a new and Improved Process and Apparatus for Cooling Beer in Fermentation-Vats, of which the following is a specification. f

The present invention relates to certain im- "provements in devices for cooling beer while in the fermentation-vats; and its chief object is to dispense with the ordinary swimmers in general use for a like purpose.

The invent-ion consists in a cooling device formed of a vertical cylinder, which is provided with a solid bottom plate having a screw threaded neck passing through the floor of the fermenting-vat, where a hand-nut is applied for retaining the cylinder.

The Water employed as a cooling` medium enters the cylinder through a tube extending. not quite to the top of the latter, and ows oft' through an opening in the bottom of the cylinder. Tubes are connected with the inlet and outlet openings for supplying the cold Water and conveying the warm Water away.

In the accompanying drawings, forming part of this specification, Figure l is a vertical sectional view ofthe cooling devices. Fig. 2 is a sectional view of a fermenti n g-vat, sh owing my cooling devices applied thereto.

The letter A denotes a vertical cylinder, which is provided with a solid bottom plate, B, having a long neck, C.

The cylinder is constructed of galvanized sheet metal, and the neck of the bottom plate is provided with external screw-threads at its lower end. Said neck passes through the door of the fermenting-vat, and a hand-nut,

F, screwed on the same serves to secure the cylinder in position and produce a tight joint between it and the vat.

Suitable packingrings may be employed for obviating any possibility ot' leakage.

Through the cylinder A passes a pipe, J,

i which terminates at a short distance below Said hose receives the water from a suitable source, say' a cooling-vat or refrigeratlng apparatus, and the water is yconducted into the cylinder A through the medium of the inlet pipe J.

By this means it will be perceived that the beer contained in the vat is cooled in a perfect and simple manner by causing cold water to pass into the cylinder A. A constant circulation of the cooling medium is maintained by drawing olf the Warm water from the bottom of the cylinder through the medium of the tube H, which communicates with a discharge-orifice, D, in the neck C. The discharge-pipe H is connected with a hose by means of a clamp or coupling, l?. At the sides of the vat are located main supply and discharge pipes L M, which are suspended from the vat and held in position by means of hooked rods N N. Suitable stop-cocks are combined with said main pipes.

In winter, when it is not necessary to use water as a cooling medium, the tube G, its hose, and main pipe are detached, and cold air derived directly from the cellar is used for cooling the beer in the vat.

I am aware that it is not broadly new to construct a beer-cooling apparatus of a cylinder, a central tube located therein, and means for supplying the cylinder with cold water and drawing the warm water therefrom.

I confine myself to the precise details of construction, upon which depends the success of my invention.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The combination Vof the bottom plate, B, constructed with the screw-threaded neck C, having orices E D and the handnut F, with the cylinderA, the pipe J, and the supply and discharge tubes, secured in the fermenting-vat, as and for the purpose set forth.

In testimony whereof I have signed'my name to this specication in the presence of two subscribing witnesses.

FRANZ LITTMANN.

Witnesses JOHANN FRANK, EDWARD P. MAGLEAN. 

